There are approximately 1,500 types of tea in the world, but if you are talking about categories of tea, there are only 4 main types: green tea / black tea / white tea / oolong. Different types of teas and their benefits White tea helps keep your skin acne-free and also has the ability to impede the growth of bacteria that cause infections Green teas catechins have been found to help inhibit cancer growth. Green tea can also help lower cholesterol and inhibit the increase of blood pressure. Oolong tea is often recommended for its weight loss properties. It is also helpful in improving symptoms that are associated with weak kidney and spleen energy. Black tea also contains antioxidants which may help to protect your body from the ravages of ageing. It is also known for its antiviral and antibacterial properties.